No it is present tense. It does matter. Jesus is referring to the now not some distant time.
They were given authority to forgive sins. You believe than that this earthly kingdom will still have sinners? In the coming earthly kingdom, people will still sin? What do you mean by earthly kingdom? Oh please give me documentation.
God promised the people of Israel a Land, a King, and a Kingdom. Their nation was to eventually become a nation of priests to bring salvation to the Gentiles nations. In the Old Testament, it was no mystery that Israel would someday spread the Word of God to all nations. But, it was prophesied to be after the Messiah had come and set up His kingdom centered in Jerusalem.
• Genesis 12:7 – Land
• Genesis 17:19; 26:3-4; 28:13-14 – Covenant – Israel
• Isaiah 9:6-7 – King (Wonderful, Counselor, The Mighty God, etc.)
• Isaiah 59:20 – Redeemer of Israel (Psalm 130:8; Zechariah 13:1)
• Exodus 19:5,6 – Israel’s role in the future kingdom (1 Peter 2:9)
• Zechariah 8:3, 7-8 , 13, 20-23 – Jerusalem, re-gathering, blessing
• Isaiah 61:5-6 – Gentiles will grow the crops for Israel
• Micah 4:1-2 – Last days, many nations (Isaiah 2:2)
They were still clinging to the idea that the messiah would be a political leader. That Jesus would restore self-rule to the country. When this didn’t happen, they wondered if it would take place then. The idea of an earthly kingdom was their misunderstanding. Just as they misunderstood that Jesus would return soon.
They didn’t misunderstand at all. Our Lord Jesus Christ had just spent 40 days teaching them about this earthly kingdom. We are told that “He opened their understanding of the Scriptures” [Luke 24:49.
from the NAB
1 Peter 15:21 Has Israel in view. Remember that Peter was an apostle to the circumcision [Gal. 2:9].
Again from the NAB
Again I will say, you can’t take a few lines of scripture out of context. You must take everything as a whole.
I guess that is why so many scriptures are misunderstood.